At that time they confirmed the Authenticity of this Swiss Rolex Made Watch and said it was probably from the 1960's or Older. This Buckle serves as a source for some insight into the metal - it states "ACIER INOX SWISS", which is French for "Stainless Steel". It is apparently a high grade stainless steel frequently used by Rolex in such Vintage Timepieces.
The Classic 16mm Stainless Steel Logo Buckle fits most Standard 19mm and 20mm Rolex watch straps. The watch face is white and it has 12 Black Roman numeral hour markers. The Stainless Steel Back bears the number 9504, presumably a model number.
The Crown also bears the Tudor Emblem. What makes this watch unique is the Tank Shape and the size, which is larger than the typical Cartier or similar popular tank watches of that era. It was most likely a men's watch in the 60's.It is a very rare model for Tudor watches. The Case Dimensions are 23mm x 30mm with 17mm lugs for the band. I have not been able to find a similar watch in comparable condition for comparison.
The mechanism inside the watch is marked "Tudor Geneva Switzerland". The watch was only worn a few times after it was refurbished and has been stored away in a Dehumidified Safe. The watch is truly in excellent condition and functions properly when wound due to the superb Service and Refurbishing by the Rolex Service Center. The watch has ample features confirming authenticity - the crown, the buckle and the Swiss Tudor markings on the movement, coupled with the Service by a Certified Rolex Service Center.I noticed the "AcierInox Swiss" markings on the underside of the buckle as I was doing additional research. This is truly a "Very Attractive, Unique & Rare Vintage Watch". The item "Vintage Tudor by Rolex Medium Tank Watch Acierinox Swiss Steel #9504 Lizard Band" is in sale since Tuesday, April 7, 2020. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Watches\Wristwatches". The seller is "1sfpete" and is located in Huntington Beach, California. This item can be shipped to United States, Canada, United Kingdom, Mexico, Germany, Japan, France, Australia, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, Sweden, South Korea, Indonesia, Thailand, Belgium, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Panama, Jamaica, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Uruguay.